Bruce Schneier algorithm
Security
Designed by renowed security technologist Bruce Schneier, this algorithm involves
passing over the storage device seven times. First with a bit pattern of '00' and
then with the bit pattern '11'. This is then followed by five random passes, making
recovery very difficult as the behavior of these random passes cannot be recreated
and reversed.
Time
In practice this algorithm takes significantly longer than the VSITR algorithm as
each random pass requires additional processing, in order to generate a random bit
pattern.